Battery MITSU for ASUS VivoBook (model BC/AS-K513E) 11.4V 3550mAh

Battery MITSU for ASUS VivoBook (model BC/AS-K513E) 11.4V 3550mAh is a rechargeable lithium-ion replacement pack designed to restore portable power to compatible ASUS VivoBook laptops. With a nominal voltage of 11.4V and rated capacity of 3550mAh (42Wh), this battery is engineered for everyday mobile computing tasks such as web browsing, document editing and light multimedia use. It provides a direct substitute for worn or degraded original batteries to extend usable run time between charges.

Advantages

This MITSU replacement battery offers a compact, lightweight design that matches form factors used in many VivoBook models, delivering the specified 11.4V output and 42Wh energy capacity for consistent performance. As a rechargeable Li-ion pack, it features predictable charge/discharge behavior and is intended to be a drop-in substitute, simplifying replacement without modifications. The battery is suitable for restoring typical laptop autonomy for daily office tasks and travel.

Suitable for

• Replacing a degraded or non-functioning battery in compatible ASUS VivoBook laptops
• Extending battery life for everyday tasks: web browsing, email, office applications
• Use during travel or remote work where mains power is not continuously available

When it may not be suitable

This battery is intended as a replacement for compatible VivoBook models and may not physically fit or electrically match other laptop series or brands. It is designed for standard daily workloads; users who require extended run times for heavy tasks such as prolonged gaming, high-resolution video editing, or continuous processor/GPU-intensive workloads may need higher-capacity solutions or to rely on mains power.

Key specifications

• Chemistry: Lithium-ion (Li-ion)
• Nominal voltage: 11.4 V
• Rated capacity: 3550 mAh
• Energy: 42 Wh
• Form factor: laptop internal replacement battery compatible with specific VivoBook designs

How to use

Power down the laptop and disconnect any external power sources before beginning replacement. Remove the rear cover of the laptop according to the manufacturer’s instructions, taking care to keep screws and small parts organized. Disconnect the old battery from the motherboard connector and remove it from the bay. Install the MITSU replacement battery in the same orientation, connect the battery cable securely to the motherboard, and reassemble the laptop. After installation, charge the battery fully before normal use to allow the battery management system to calibrate.

What to consider before purchase

• Confirm physical compatibility with your specific ASUS VivoBook model and check mounting points and connector type
• Verify that the nominal voltage and capacity (11.4V, 3550mAh / 42Wh) match or are acceptable for your device
• Ensure you have the appropriate tools and follow safety steps for internal battery replacement

Usage recommendations

Store and operate the battery within recommended temperature ranges, avoid prolonged exposure to high heat, and use the laptop’s official charger or an appropriate replacement. For optimal battery life, avoid deep discharges when possible and recharge before the battery reaches critically low levels. Dispose of the old battery according to local regulations for lithium-ion cells.